title: Porcine Toll-like receptors: recognition of Salmonella enterica serovar Choleraesuis and influence of polymorphisms.
abstract: Salmonella enterica serovar Choleraesuis (SC) is a highly invasive pathogen that causes enteric and septicemic diseases in pigs. Although there have been some reports on gene expression profiles in the course of infection with SC in pigs, little is known about the genes involved in the infection. By measuring activation, as represented by nuclear factor-κB activity, after stimulation by the pathogen, we showed the involvement of Toll-like receptor (TLR) 5 and the TLR2-TLR1 heterodimer in the recognition of SC. We previously found single nucleotide polymorphisms (SNPs) in the TLRs of various pig populations. Here we demonstrated that the polymorphisms resulting in amino acid changes TLR5(R148L), TLR5(P402L), and TLR2(V703M) attenuated the responses to SC by the cells transfected with the TLR genes. Each of these three SNPs was differently restricted in distribution among breeds. These results suggest that there are differences in resistance to salmonellosis among breeds; these differences may be of great importance for the pig industry in terms of breeding and vaccine development.
authors.affiliation: Division of Animal Sciences, National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Shinkai
authors.forename: Rintaro
authors.initials: R
authors.lastname: Suzuki
authors.forename: Masato
authors.initials: M
authors.lastname: Akiba
authors.forename: Naohiko
authors.initials: N
authors.lastname: Okumura
authors.forename: Hirohide
authors.initials: H
authors.lastname: Uenishi
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D057809:HEK293 Cells; D006801:Humans; D008969:Molecular Sequence Data; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D017433:Protein Structure, Secondary; D012481:Salmonella Infections, Animal / Q000235:genetics / Q000276:immunology* / Q000382:microbiology; D019779:Salmonella enterica / Q000276:immunology*; D016415:Sequence Alignment; D034421:Sus scrofa / Q000235:genetics / Q000276:immunology* / Q000382:microbiology*; D051193:Toll-Like Receptors / Q000737:chemistry / Q000235:genetics* / Q000276:immunology*
chemical_list: D051193:Toll-Like Receptors